~anthropic/claude-sonnet-latest → B (6:4)

Side B implements a real, self-contained feature (multi-provider OAuth linking with UUID-as-canonical-identity, conflict handling, privacy of linked providers) backed by new server logic, storage schema changes, and updated tests/mocks—clear lasting design value. Side A is mostly deployment/infra plumbing (Dockerfile, fly.toml, CI) plus a large dashboard UI/CSS/JS addition that, while functional, is more scaffolding and observability sugar than core product logic, with less durable architectural weight.